added csv download

app/public/download_table.php

@@ -0,0 +1,35 @@
+<?php
+    session_start();
+
+    include("../scripts/connection.php");
+    include("../scripts/functions.php");
+    $user_data = check_admin($con);
+
+    if(isset($_GET['table'])) {
+        $table = $_GET['table'];
+    }
+
+    header('Content-type: text/csv');
+    header('Content-Disposition: attachment; filename="table.csv" ');
+
+function download_table($stmt) {
+    $output = fopen('php://output', 'w');
+    $header = true;
+    while ($row = $stmt->fetch()) {
+        if ($header) {
+            fputcsv($output, array_keys($row));
+            $header = false;
+        }
+        fputcsv($output, $row);
+    }
+    fclose($output);
+}
+
+    if($table == "total-score") {
+        $total_score = get_total_score($con);
+        download_table($total_score);
+    } else {
+        $station = get_station($con, $table);
+        download_table($station);
+    }
+?>